Roasting furnace



May 8, 1923.

J. THOMAS ROASTING FURNACE 4 Sheets-Sheet l Filed Jan. 27

' MMM x' Om my 4"TORNEV8 May 8,1923. 1,454,798

J. THOMAS RoAsTING FURNACE Filed dan. 27 19232 4 sheets-sheet 2 May 8, 923.

J. THOMAS ROASTING FURNACE Filed Jan. 27, 1922 4 Sheets-Sheet 3,

W/TNESSES er Y@ ATTORNEYS J. THOMAS ROASTING -FURNAGE `May 8, 1923. 1,454,798

Filled Jan. 27, 1922.. 4 sheets-sheet 4 /NVEn/rog dosfH Flo/v4: l

A TTIMIEYS PatentedY May 8, 1923.

l l 1,454,798 ATF-:NT OFFICE..

JOSEPH THOMAS, 0F ABEBDEEN, WASHINGTON.

noasrmc nummer..

Application med January 27, 192.2. serial nu. 532,163.

To all 'whom it may concern.'V

Be it known that I, JOSEPH THOMAS, a citizen of the United States, and residentof Aberdeen, in the county of Grays Harbor and State of lfVashington, have invented a' new and Improved Roasting Furnace, of

which the following is a full, clear, and exact description.

My invention aims to provide a roasting furnace which may be operated by any desirable type of fuel, and which is particularly adapted for use in connection with the production and condensation of gases from tree refuse, oil shale deposits, lignite coal beds, refractory ores, etc. although it may be utilized in numerous other adaptations, this furnace embodying certain new and useful construction over furnaces of this type heretofore -placed upon the market.

A further object ofv this invention is the provision of a device of the character stated -which may be readily portable, and in which the construction will be simplified to a maximum extent, it being further noted that a construction is provided by means of which the degree of roasting may be controlled to a nicety.

A further object of this invention is the provision of a device of the type' specified which may be of sectional construction so that the parts may be assembled to efficiently conform to operate with that type of material which is to be operated upon, it being further noted that a construction is provided yyhich will render the entire device adjusta- Still another object of this invention is that vof providing a furnace in which differ-v` ent parts of the same may be subjected to varying degrees of heat, aside from the fact that by means of the improved construction provided, the gas will be eliminated at and near the point of combustion so that a maximum efficiency will be achieved, aside from the fact that said furnace'may be subjected to a free circulation of oxy n orthat the interior of the same may be c osed from contact with the atmosphere', whereby I derive a principle of gas elimination, gas condensation,and gas llame control.

Further objects of this invention will become apparent in the annexed specification -,taken in connection with the drawings which Figure 2 1s a sectional view taken along i I the line 2-2 and in the direction of the arrows indicated in Figure 1.

Figure 3 is a fragmentary enlarged set:-v tional view of the essential working parts of the furnace.

Figure 4 is a transverse sectional vi'ew taken along the line 4--4 and in the direction of the arrows indicated in Figure 3.

Figures 5, 6, 8, and 11 are views corresponding to Figure 3 but showing a slightly different construction and arrangement of the parts.

Figures 7 and 10 are side elevations of details of construction, and

Figure 9 is a transverse sectional view taken along the line 9-9 and in the direction of the arrows indicated in Figure 8.

Attention is rimarily invited to Figure 1 which shows t e general assembly of the oven, and it will be noted in this view that the reference numeral 15 indicates the'suporting members which, in the embodiment Illustrated, are in vthe nature of skids, thus rendering the entire device mobile; Also it will be seen that the device includes standards 16 and 17A as well as lugs 18, and the oven proper is supported by these elements.

Referring to the construction of this oven it will be seen that the exterior of the same presents a longitudinalbody 19 carried by a frame 20 and this body inthe embodiment 22' by lugs 18 for a purpose hereinafter specified.

Also it will be noted, that in the type of device shown in Fi re 1, the frame 20, as well as the `standards 16 and 17 'fare provided lwith a seriesofvopenings 23 and the openings 0f the standards and frame may be brought to align so that bolts 24 may be passed through the same and rigidly connect the whole together. It will be obvious that by this type of connection the degree of inclination of the 4frame 20 with respect to the skids 15, may be varied, and thus the speed of material passing through the body 19 under -the'impulse ofgravity, may be varied.

Also it will be seen that the entire body 19 is composed of a number of sections 25, which as has been shown in Figure 3, may be interlocked with respect to each other by any suitable type of joint. Further a supplemental sectiop 26 is associated with each of the sections 25 for a purpose herelnafter brought out, and itrwill be seen that `by roviding a series of roasting plates 27 with- 1n the body 19 that the interior` of the latter is dividedinto two longitudinal spaces 28 and 29, the former serving to accommodate the material to be roasted, while the latter serves as a 'lue for the purpose of .the lame and products of combustion emanating from the fire box 21. Now with a view of .introducing material to be treated into the oven, attention is again invited to. F igure'll taken in conjunction with Figures 2, 3 and 4, and it will beseen that the uppermost section 25 is provided withv a hopper 30, which hopper may be brought to align with a feed chute 31. Thus the material will pass into the uppermost section and move across the roasting place 27 positioned therein, and incident to the fact that all of the lates are arranged at an angle to the longltudnal axis of the body 19 it will be seen that this movement will be continued in the nature of a step-bystep motion throughout the entire length of the furnace, the roastedmaterial finally emerging from the body 19 through the delivery chute 32, associated with the lowermost-section 25. 9

With a view of controlling the heat with- -in the flue underlying the roasting plates 27 it will be seen that I preferably utilize a series of dampers 33 positioned within the space 29 thus causing the flame and products'of combustion to movein the path divrected by the arrows in. F1gure 3, and if it is desired to subject the lmaterial being treated to direct contact with a cert-ain amount of this flame and products of combustion, it will be obvious that this result may be accomplished by providing the plates 34`which are disposed between the ends of the roasting plates 27 with openings 35, the latter permitting of communication between the spaces 28 and 29.

The same result may be achieved as has been indicated in Figure 5 by providing roasting plates 36 presenting a plurality of steps in their upper face, openings 37 belng formed in the risers of these steps so as to provide communication between the spaces -28 and 29. In each instance however, i. -e.

in the construction shownin Figures 3 Aand sor 4stroyed.

4 as well as in Figure 5, it will be seen that the openings 35 and 37 are disposed in such al manner as 'to' prevent any dangerof theA material falling into the flue and being de- Also it will be obvious that,lif in connection with certain materials, it is found desirable of the body 19 with respect to the horibe accomplished by the construction illus` trated in Figure 6 in which neither the roast- 1ng plates 38 nor the plates 39 are provided with openings permitting of communication between the spaces 28 and 29. Further it will be obvious that a surplus of oxygen may be introduced into the roasting space 28 when this is desired, by the provision of openings 40 in the side walls of the sections as shown in Figure 3, or by the use of lpipes 41 having one of their ends extending beyond the body 19 and their opposite ends extending through the roasting plate 38 and thus being in communication with the space above said plate as shown in Fig. 6, and it will be seen reference being had to Figures 10 and 7 that the face of the plates 36 and 38 are respectively shown, and also' illustrate the connection existing between the flue and the .space 28, as well as the additional au' provlslon. 1

It will be understood that if it is desired I may heat each of the roasting plates individually, and with thisin mind, attention is invited to Figures 8, 9 and 11, in which it will be noted that Figures 8 and 9 show the body 19 with the supplemental sections 26 removed, thus dispensing with the flue and fire box. In other words, virtually the same construction, as has been illustrated 1n Figure 5 is resorted to with the exception that the supplemental sections 26 providing the spaces 29 are detached. In lieu plate illustrated in Figures 3 and 4 may be used in conjunction with the burners 42, and thus in this instance the flue, comprising the sections 26and the fire box 21 may be dispensed with, obviously simplifying the constructionand in some instances increaslng the eliclency of the result.

It will be noted in all of these various types that I preferably provide sight openings 43 which are associatedwith eachof the sections 25 so that an operator may be enabled to observe the treatment which the material is undergoing, and assuming that the material is being treated too rapidly or t'oo sluggishly, it will .beobvious that this may be corrected' by the-adjustment of the dampers v 33, the regulationof the flow of gas through the burners 42, or the degree of inclination zontal. Also to properly treat thel gases derived from the roasting process it will be noted, attention being invited toall of the figures, that each of the sections 25 has an outlet pipe 44, in communication with it at apoint. above the roasting plates. These pipes are interconnected and merge into a common duct 45 from whence they may Y the gases are passed through a water tank l which are;

ass into a depositing tank 46, this passage eing effected and laccelerated preferably by any suitable type of pump 47 connected with the tank 46 it being finally noted that 48 from whence they may be withdrawn through a pipe 49.

Thus `it will be appreciated that all of the objects of this invention are accomplished, and it will be understood that numerous modifications of structure might readily be resorted to Without in the least departing from the scope of my claims;

1. A roasting furnace including a supporting member, lugs secured to said supporting member, va furnace body pivotally attached adjacent one of its ends to said lugs, and standards attached to said su porting member and adapted to engage sald body to normally withhold the same from movement with respect to said member.

2. A roasting furnace includinga supporting member, lugs attached to said supporting member a furnace body rockingly secured to said lugs, standards attached to said supportin member, said standards being formed Wit a series of openings, a frame for said body, said frame also being formed with a series of openings capable of being brought into alignment with said standard openin and means adapted to pass throug said aligning openings to retain all of the parts ailixed with respect to each other. v

3. A roasting furnace'includinga body, an inclined roasting plate within said body, means below said plate for heating the same, said plate being formed with openin approaching the upper surface of the p ate at an acute angle thereto.

4. A roasting furnace including a body, a series of roasting plates disposed Within said body to divide the same into an upper and lower space, said plates being disposed to provide a step-by-step surface, and openings extending transversely through the risers of said4 surface and affording communication between said spaces.

5. A roasting furnace including a body comprising a plurality of sectlons detachably secured together, roastmg plates car- 'comprising a plurality of sections detachably secured together, roasting plates carried by each of said sections, supplemental sections secured tosaid lirst named sections, said supplemental sections acting as a ue, and a ire box connected to said supplemental sections.

7. A roasting furnace including a body providing a plurality of longitudinal sections secured together end to end, each section including an upper portion and a detachable bottom portion, and roastingv plates carried individually by one of said portions ofeach section.

8. A roasting furnace including a body providing a plurality ofl longitudinal sections secured together end to end, each section including an upper portion and a detachable bottom portion, and roasting plates carried individually by one of said portions Vofeach section, said roasting plates being tion including an upper portion and a de tachable bottoni portion, and lroasting plates carried individually by one of said portions of each section, said roasting plates being formed to have interittingA ends, oneend of the matching end of a contiguous plate.

10. A roasting furnace including a body providing a plurality of longitudinal sections secured together end to end, each section including an upper portion and a detachable bottom portion, and roasting plates carried individually by the upper portions of each section.

l1. A roasting furnace includin a body providing a plurality oflongitu mal sections secured together end to end, each section including an upper portion and a detachable bottom portion, roasting plates carried individually by one of said portions of each section, and observation Windows carried individually by one of the portions of each section.

12. A roasting furnace including a body ,y

4a roasting plate presenting a riser to meet lio 

